Type-bar-casting machine



3 Sheets-.Sheet 1; C. SEARS. TYPE BAR CASTING MACHINE. No. 596,340. Patented Deo. 28,1897.

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C. SEARS.A

v TYPE BAR ASTING MACHINE. No. 596,340. Patented Deo. 28,1897.

(No Model.)

' 3 Sheets-Sheet 3.

C. SEARS. TYPE BAR CASTING MACHINE.

Patented Deo. 28,1897.

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Y' IINrrnD i. STATE-s- FA'rnNr Ormea..

CHARLES SEARS, OF CLEVELAND, OHIO.

TYPE-BAR-CASTING MACHIN E.

SPECIFICATION forming part of Letters Patent No. 596,340, dated December 28, 1897.

Application filed october 22,1896.

which is particularly designed to form typebars by casting upon the edge of previouslyprepared slugs or blanks a thin strip of typemetal having on its face printing-characters which correspond with the characters ou a previously-prepared matrix. The matrices which are intended to be used with the machine are those which are formed by imprinting the characters into the end fibers of strips of wood of uniform size; but matrices of other kinds may be used, or an entire type-bar may be cast either with the particular machine shown or with machines of modilied construction, but nevertheless employing the invention or material parts thereof, as set forth in the claims. y

The principal object of the invention as embodied in the machine shown is to automatically and rapidlyform the described kind of type-bars from a stock of previously-pre-4 pared matrices. One result which has in particular been aimed at is the casting upon the blank of character-carrying edges which shall have perfect printing-surfaces and no blowholes or other imperfections.

The invention consists in the construction and combination of parts hereinafter described and claimed.

In the drawings, Figure l is a front elevation of so much of the machine as contains my invention.` Fig. 2 is a plan view thereof when the removable part of the casting-box has been removed. Fig. 3 is a sectional end view on line 3 3 of Fig. 2. Fig. 4 is a sectional view of the plane indicated by line 4 4, and Fig. 5 is a plan View of the hopper. Fig. 6 is a bottom plan `View of plate Gr, enlarged.

The drawings do not show the melting-pot, pump, or the connection vbetween the nozzle Serial No. 609,662. (No model.)

and pump, because there is nothing new in the form of these parts which I propose to use, and such parts having any suitable construction may be used.

Referring to the parts by letters, A representsthe bed-plate of the machine, and B the hopper, secured thereon, having two compartments btb?, separated by a partition b, in Which are respectively placed a stock of matrices I and type-bar blanks J. A feed-slide C, having two arms c c', is movable between guides d et on the bed-plate and is periodically advanced to carry the bottom matrix and blank from the hopper into the casting-box. The slots b3 b4 vare formed in the bottom of the sides of the hopper to permit the described movement of the slide and the matrix and type bar. The arm c normally projects through the slot b3 into the compartment ZJ', which contains the blanks, and the column of blanks rests upon this slide-arm. On this arm, just to the right of the'blanks, is a shoulder c2, which is not quite as high as the blanks are thick. The end of the slide-arm c liesnormally just to the right of the lowest matrix. When the slide is moved to the left, the shoulder c2 and the end of the arm c' re- Yspectively engage with the lowest blank and matrix and push them through the slots b4 into the casting-box. The slide may be moved by any suitable mechanism, but I have shown a gear-segment F, which engages with a rack c3 on the slide, which segment is oscillated by means of a rocker-arm H, which is connected with the gear-segment by a pitman' f. The said arm H is rocked by a crank-pink on a driven shaft K, which pin Works in a slot h in the arm II. Any other mechanism for periodically operating the slide C might be em-.

ployed. The two arms of the slide are constructed differently, as described, because the blanks are no't so thick as the matrices with which the machine is especially organized to work.

The casting-box, which is placed upon the bed-plate, is movable a short distance toward and from a nozzle L, placed between itself and the hopper for the purpose of periodically making the necessary connection with said nozzle. 'Ihis nozzle extends vertically up through the bed-plate. Its end is turned over IOO into horizontal position and is directed toward the casting-box. The end of this nozzle is tapered slightly.

The bottom plate D of the casting-box rests upon the bed-plate between the two longitudinal guides 0,2 a2. Near the middle of this plate and in line with the partition in the hopper is a raised longitudinal rib d, extending from one end to the other. Alaterally-movable bar E, parallel with the rib d, lies upon j the plate D beneath the flange cl2. Two levers e e are pivoted at their lower ends to the plate D and their upper ends are connected together by a bar c. by links e2 with the bar E.

Two pins d3 cl3, mounted in one of the guidebloeks a2, pass through horizontal slots in a vertical flange (Z4 on the rear edge of the plate D. Their outer ends are connected together by a bar M represents a housing for the verticallylnovable members of the casting-box, and this housingis fastened to the bed-plate by a screw or screws which pass through the foot m of the housing. This housing is provided with a handle m', by which this housing and all that it supports may be lifted off when these screws are removed. The horizontal grip or handpiece m2 is made of glass, wood, or some other non-heat-conducting material.

N represents a shaft which is journaled in the sides of the housing, and to it are secured three cams n n a, the two outer cams n being alike. This shaft is revolved constantly, being connected by gears with the main driving-shaft I).

G represents the top mold-plate, which has a bifureat-ed stem g, in the forks of which the transverse vertical slots g are formed.

R R represent two vertically-movable gates, the lower ends of which are movable in vertical slots through the plate G.

Theselevers are connected l In both of 'f these gates are the transverse vertical slots fr, near their upper ends. The shaft N extends through the slots r and g' in said gates R R and the stein g, and the cams n. n and n engage with the said gates and stem, respectively, to move them up or down, as the case may be.

In the bottom of the plate g are two springl actuated presser-feet g2 g3, whose ends adjacent to the hopper are beveled, whereby the matrices and blanks may slide beneath them, the functions of these presser-feet being to press the blank and the matrix down upon the bottom plate D and prevent them from moving too far. A vertical pin d', which is set in the bottoln plate D, passes into a hole in the top mold-plate G, which permits said mold-plate to move independently in a vertical direction, but which compels both plates to move together horizontally.

The bottom blank J and the bottom matrix I are respectively moved out of the hopper and into the mold-box by the two arms of the slide C. The blank, as before stated, rests upon the arm c. The blank in passing into the casting-box engages with the lower end of a beveled spring-pin g4, which is seated in the top plate G, thereby lifting the pin, which, after the blank has passed it, flies down behind the blank. Therefore when the slide is retracted the blank must remain in the casting-box upon the plate D. The matrix and the blank are now in the casting-box, resting upon the plate D, respectively in front of and behind the rib d. The lever Q, which is pivoted to the housing M, has a slot q in its lower end which engages with the bar c'. Its upper end is engaged by a cam s on a shaft S, which is mounted in the housing. The rocking of this lever causes the bar E to move laterally and push the matrix-block I against the front face of the rib d, andalso against a shoulder 97 on the lower face of the plate G, which shoulder is in the same vertical plane as the front face of said rib d. At the same time the blank J is moved by the pins cl3 toward the matrix-block and into contact with the rear face of the same rib (l. The space between the rib d and plate G and between the matrix and the blank type-bar is the mold-space to be filled with metal to finish the type-bar. The pins d3 are moved by means of a bell-crank lever T, pivoted to an upright post u2. The lower arm of this lever is slotted and embraces the bar d5. The other arm of the lever is engaged by a cam u on a shaft U, which is mounted in fixed posts u', and a contractile coil-spring t is secured to the other arm of the lever and to a fixed arm o2. The action of the cam upon ,the lever moves the pins (Zlinward to force the blank toward the matrix, as described. The spring causes the withdrawal of said pins. As the matrix and blank are moved in the casting-box they slide beneath the two presser-feet g2 g3, which prevent them from acquiring a momentum which will carry them beyond the point to which they are posi tively pushed. The top plate G is moved down so that it bears upon the top of the blank by the action of the cam n. The gates R R are also moved down by the cams fn n'. The distance between the proximate faces of these gates is exactly equal to the length of the blank J.- Vvherefore said gates bear against the ends of the blank. The gates R have forwardly projecting vertical knifeedges r', which cut into the face of the matrixblock- When the parts have reached the position described, the space between the matrix and the blank is entirely closed, except for a hole r2 through the right-hand gate R, which hole is directly in line with the nozzle L. The entire casting-box is then moved to the right. Said hole embraces the nozzle, being tightly closed thereby, and when the parts are in this position molten metal is injected through the nozzle into the inclosed mold'spacc from the end thereof. I have discovered after much experimenting that when the molten metal is injected from the end of vthe moldspaee the strip of metal bearing the printing-characters is substantially without blow-holes and the ICO IIO

printing-surface is practically perfect. The

results in these particulars are much better than when the molten metal is injected from the side ortop or bottom of the mold-space.

` oted to a stud tu, which issecured to the rear side ofthe housing. The ,lower end of this lever is slotted and it embraces a rearwardlyprojecting pin g5, secured to the plate G. The upper end of this lever is beveled and is adapted to be struck by the two beveled arms p p', which are secured to the driving-shaft,

I. One of these arms strikes one side of the lever and rocks it in one direction, which causes the casting-box to be lmoved to the right into the described engagement with the nozzle. The other arm strikes this lever, rocks it in the contrary direction, and causes the casting-box'to be moved in the reverse direction. The continued revolution of the driving-shaft causes all the parts of the casting-box to reverse their motion after the printing edge has been cast upon the blank. Another advance of the slide C pushes another matrix and another blank into the castingbox, and they push before them, out of the casting-box, the matrix which has just been used and the completed type-bar which hasv just been formed. These results proceed automatically and indefinitely so long as the machine is run and matrices and blanks are supplied to the hopper.

Having described my invention, I claim- 1. In a type-bar-casting machine, the combination of a casting-box adapted to hold a matrix having a plurality of alined characters and to inclose a type-bar-mold space in line with the character-line upon said matrix, 'with means for delivering molten metal into the mold-space'from one end thereof, that is to say, from a point at one side of the characters, whereby the molten metal will iow into said space in a direction transverse to the said characters, substantially as and for the purpose specified.

2. In a type-bar-castin g machine, the combination of a casting-box containing a recess for a type-bar blank, and mechanism for holding a matrix in parallel relation to said typebar blank, and mechanism for inclosing the space between them, with a nozzle adapted to direct molten metal into said space from one end thereof, substantially as and for the purpose specied.

3. In a type-bar-casting machine, the combination of a casting-box adapted to receive a prepared matrix and a type-bar blank, and

A to hold them in parallel relation at the proper distance apart, and means for inclosing the space between them, with a nozzle, and mechanism for introducing the nozzle into the end of said inclosed space, substantially as and for the purpose specied.

4. In a type-bar-casting machine, the combination of a lon gitudinally-movable castingbox adapted to hold a prepared matrix and a type-bar blank in parallel relation and at the proper distance apart, and mechanism for inclosing the space between them except for a hole at one end of said space, with a fixed nozzle adapted to enter and close said hole, and mechanism for moving the casting-box toward and from the nozzle, substantially as and Jfor the purpose speciied.

5. In a type-barcasting machine, the combination of a casting-box consisting of a bottom mold-plate adapted to support a matrix and a type-bar blank, and having a raised rib between them, mechanism for forcing lsaid matrix and blank against'said rib, a vertically-movable top mold-plate, and two vertically-movable end gates, whereby the matrix and blank are held in parallel relations and the space between them is inclosed, with a nozzle for directing molten metal into said inclosed space, substantially as and for the purpose specified.

6. In a type-bar-casting machine, in comf bination, a hopper adapted to contain a supply of prepared matrix-blocks and type-bar blanks, a casting-box movable toward and from said hopper, a slide for pushing the matrix-blocks and blanks from the hopper and into the casting-box, mechanism for holding said matrix-blocks and blanks in the castingbox in parallel relations and' at the proper distance apart, and for inclosing the space between them except for a small hole at one end of said space, with a fixed nozzle located between the casting-box and hopper, and mechanism for moving the casting-box toward and from said nozzle, substantially as and for the purpose specified.

7. In a type-bar-casting machine, in combination, a longitudinallymovabley bottom mold-plate having a longitudinal raised rib, a hopper adapted to contain a stock of prepared matrices and type-bar blanks, mechani'sm for moving a matrix-block and a blank from the hopper onto said plate on opposite sides of said rib, mechanism for forcing said matrix-block and blank against said rib, a top mold-plate movable vertically independently of the bottom plate,connections between said plates whereby they must movelongitudinally together, end gates vertically movable in guides in the top plate, one of said gates having a hole in which the nozzle will fit, a fixed nozzle, and mechanism for moving a casting-box toward and from the nozzle, substantially as and for the purpose specified.

8. In a type-bar-casting machine, in combination, a bottom mold-plate having a longitudinal raised rib, a vertically movable top mold-plate having two spring-actuated presser-feet in its lower side, mechanism for moving a matrix-block and a type-bar blank onto the bottom plate on opposite sides of said rib and beneath said presser-feet, mechanism for moving. the matrix-block and blank against said rib, end gates for closing 'the ends IOO IIO

of the space between said matrix-block yand blank, and a nozzle for directing molten metal into the inclosed space between said matrix block and blank, substantially as and for the purpose specified.

9. In a type-bar-casting machine, in combination, a casting-box eonsistin g of a longi tudinally-movable bottom mold-plate adapted to support a matrix-block and type-bar blank, and having a raised longitudinal rib between them, a housing, a top mold-plate which is movable vertically and horizontally in said housing, a vertical pin d', two end gates, one having a hole, a cam-shaft mounted in the housing, cams thereon for operating said top mold-plate and gates, a lined nozzle, and mechanism for moving the casting-box toward and from the nozzle, substantially as and for the purpose speciied.

10. In a type-bar-casting machine, in com bination, a horizontally-movable casting-box adapted to hold a matrix-block and a typebar blank in parallel relations and at the proper distance apart, means for inclosing the space between them except for a hole at one end thereof, a fixed nozzle having a horizontal tapered end, and mechanism for moving said casting-box toward and from the nozzle to cause it to enter and withdraw from said hole, substantially as and for the purpose specified.

ll. In a type-bar-easting machine,the combination of a longitudinally-movable bottom plate D, having a rib d, the housing M, camshaft N, and cams n n' n', top mold-plate G having a stem which is slotted and embraces the shaft N, two gates R R which slide through the bottom plate and are slotted and embrace the said shaft, one of said gates having a noz zie-hole, the pin d', the xed nozzle L, and mechanism for moving the two plates and gates, substantially as and for the purpose specified.

l2. In a type-bar-casting machine,tl1e combination of a longitudinallymovable bottom plate D having a raised rib d, and a removable housing M, with a vertically-movable top plate G, end gates R, and their operating mechanism supported by said housing, substantially as and for the purpose specified.

13. In a type-barcasting machine,the combination of a bottom mold-plate having a raised rib, means for introducing a matrixblock and a blank onto said plate on opposite sides of said rib, mechanism for pushing said matrix and blank laterally into contact with said rib, with a vertically-movable top moldsplate, the spring-actuated presser-feet carried thereby, the vertically-movable end gates having vertical knives on the edges which face the matrix-block, and means for direetiu g molten metal into theinclosed space between the matrix-block and blank, substantially as and for the purpose specified.

14. In a type-barcasting machinc,the combination of a hopper having two compartments, both sides of which are slotted at the bottom, a slide having two arms, one of which extends across one of the compartments and has a shoulder c2, with a casting-box consisting of a bottom plate, a vertically-movable top plate, and end gates, and a beveled springpin g, which projects down from said top plate, substantially as and for the purpose specified.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES SEARS.

Witnesses:

E, L. THURsToN, E. B. GILcHRisT. 

